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acme.sh/deploy/ssh.sh

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#!/usr/bin/env sh
# Script to deploy certificates to remote server by SSH
# Note that SSH must be able to login to remote host without a password...
# SSH Keys must have been exchanged with the remote host. Validate and
# test that you can login to USER@SERVER from the host running acme.sh before
# using this script.
#
# The following variables exported from environment will be used.
# If not set then values previously saved in domain.conf file are used.
#
# Only a username is required. All others are optional.
#
# The following examples are for QNAP NAS running QTS 4.2
# export DEPLOY_SSH_CMD="" # defaults to "ssh -T"
# export DEPLOY_SSH_USER="admin" # required
# export DEPLOY_SSH_SERVER="host1 host2:8022 192.168.0.1:9022" # defaults to domain name, support multiple servers with optional port
# export DEPLOY_SSH_KEYFILE="/etc/stunnel/stunnel.pem"
# export DEPLOY_SSH_CERTFILE="/etc/stunnel/stunnel.pem"
# export DEPLOY_SSH_CAFILE="/etc/stunnel/uca.pem"
# export DEPLOY_SSH_FULLCHAIN=""
# export DEPLOY_SSH_REMOTE_CMD="/etc/init.d/stunnel.sh restart"
# export DEPLOY_SSH_BACKUP="" # yes or no, default to yes or previously saved value
# export DEPLOY_SSH_BACKUP_PATH=".acme_ssh_deploy" # path on remote system. Defaults to .acme_ssh_deploy
# export DEPLOY_SSH_MULTI_CALL="" # yes or no, default to no or previously saved value
# export DEPLOY_SSH_USE_SCP="" yes or no, default to no
# export DEPLOY_SSH_SCP_CMD="" defaults to "scp -q"
#
######## Public functions #####################
#domain keyfile certfile cafile fullchain
ssh_deploy() {
_cdomain="$1"
_ckey="$2"
_ccert="$3"
_cca="$4"
_cfullchain="$5"
_deploy_ssh_servers=""
_debug _cdomain "$_cdomain"
_debug _ckey "$_ckey"
_debug _ccert "$_ccert"
_debug _cca "$_cca"
_debug _cfullchain "$_cfullchain"
# USER is required to login by SSH to remote host.
_migratedeployconf Le_Deploy_ssh_user DEPLOY_SSH_USER
_getdeployconf DEPLOY_SSH_USER
_debug2 DEPLOY_SSH_USER "$DEPLOY_SSH_USER"
if [ -z "$DEPLOY_SSH_USER" ]; then
_err "DEPLOY_SSH_USER not defined."
return 1
fi
_savedeployconf DEPLOY_SSH_USER "$DEPLOY_SSH_USER"
# SERVER is optional. If not provided then use _cdomain
_migratedeployconf Le_Deploy_ssh_server DEPLOY_SSH_SERVER
_getdeployconf DEPLOY_SSH_SERVER
_debug2 DEPLOY_SSH_SERVER "$DEPLOY_SSH_SERVER"
if [ -z "$DEPLOY_SSH_SERVER" ]; then
DEPLOY_SSH_SERVER="$_cdomain"
fi
_savedeployconf DEPLOY_SSH_SERVER "$DEPLOY_SSH_SERVER"
# CMD is optional. If not provided then use ssh
_migratedeployconf Le_Deploy_ssh_cmd DEPLOY_SSH_CMD
_getdeployconf DEPLOY_SSH_CMD
_debug2 DEPLOY_SSH_CMD "$DEPLOY_SSH_CMD"
if [ -z "$DEPLOY_SSH_CMD" ]; then
DEPLOY_SSH_CMD="ssh -T"
fi
_savedeployconf DEPLOY_SSH_CMD "$DEPLOY_SSH_CMD"
# BACKUP is optional. If not provided then default to previously saved value or yes.
_migratedeployconf Le_Deploy_ssh_backup DEPLOY_SSH_BACKUP
_getdeployconf DEPLOY_SSH_BACKUP
_debug2 DEPLOY_SSH_BACKUP "$DEPLOY_SSH_BACKUP"
if [ -z "$DEPLOY_SSH_BACKUP" ]; then
DEPLOY_SSH_BACKUP="yes"
fi
_savedeployconf DEPLOY_SSH_BACKUP "$DEPLOY_SSH_BACKUP"
# BACKUP_PATH is optional. If not provided then default to previously saved value or .acme_ssh_deploy
_migratedeployconf Le_Deploy_ssh_backup_path DEPLOY_SSH_BACKUP_PATH
_getdeployconf DEPLOY_SSH_BACKUP_PATH
_debug2 DEPLOY_SSH_BACKUP_PATH "$DEPLOY_SSH_BACKUP_PATH"
if [ -z "$DEPLOY_SSH_BACKUP_PATH" ]; then
DEPLOY_SSH_BACKUP_PATH=".acme_ssh_deploy"
fi
_savedeployconf DEPLOY_SSH_BACKUP_PATH "$DEPLOY_SSH_BACKUP_PATH"
# MULTI_CALL is optional. If not provided then default to previously saved
# value (which may be undefined... equivalent to "no").
_migratedeployconf Le_Deploy_ssh_multi_call DEPLOY_SSH_MULTI_CALL
_getdeployconf DEPLOY_SSH_MULTI_CALL
_debug2 DEPLOY_SSH_MULTI_CALL "$DEPLOY_SSH_MULTI_CALL"
if [ -z "$DEPLOY_SSH_MULTI_CALL" ]; then
DEPLOY_SSH_MULTI_CALL="no"
fi
_savedeployconf DEPLOY_SSH_MULTI_CALL "$DEPLOY_SSH_MULTI_CALL"
# KEYFILE is optional.
# If provided then private key will be copied to provided filename.
_migratedeployconf Le_Deploy_ssh_keyfile DEPLOY_SSH_KEYFILE
_getdeployconf DEPLOY_SSH_KEYFILE
_debug2 DEPLOY_SSH_KEYFILE "$DEPLOY_SSH_KEYFILE"
if [ -n "$DEPLOY_SSH_KEYFILE" ]; then
_savedeployconf DEPLOY_SSH_KEYFILE "$DEPLOY_SSH_KEYFILE"
fi
# CERTFILE is optional.
# If provided then certificate will be copied or appended to provided filename.
_migratedeployconf Le_Deploy_ssh_certfile DEPLOY_SSH_CERTFILE
_getdeployconf DEPLOY_SSH_CERTFILE
_debug2 DEPLOY_SSH_CERTFILE "$DEPLOY_SSH_CERTFILE"
if [ -n "$DEPLOY_SSH_CERTFILE" ]; then
_savedeployconf DEPLOY_SSH_CERTFILE "$DEPLOY_SSH_CERTFILE"
fi
# CAFILE is optional.
# If provided then CA intermediate certificate will be copied or appended to provided filename.
_migratedeployconf Le_Deploy_ssh_cafile DEPLOY_SSH_CAFILE
_getdeployconf DEPLOY_SSH_CAFILE
_debug2 DEPLOY_SSH_CAFILE "$DEPLOY_SSH_CAFILE"
if [ -n "$DEPLOY_SSH_CAFILE" ]; then
_savedeployconf DEPLOY_SSH_CAFILE "$DEPLOY_SSH_CAFILE"
fi
# FULLCHAIN is optional.
# If provided then fullchain certificate will be copied or appended to provided filename.
_migratedeployconf Le_Deploy_ssh_fullchain DEPLOY_SSH_FULLCHAIN
_getdeployconf DEPLOY_SSH_FULLCHAIN
_debug2 DEPLOY_SSH_FULLCHAIN "$DEPLOY_SSH_FULLCHAIN"
if [ -n "$DEPLOY_SSH_FULLCHAIN" ]; then
_savedeployconf DEPLOY_SSH_FULLCHAIN "$DEPLOY_SSH_FULLCHAIN"
fi
# REMOTE_CMD is optional.
# If provided then this command will be executed on remote host.
_migratedeployconf Le_Deploy_ssh_remote_cmd DEPLOY_SSH_REMOTE_CMD
_getdeployconf DEPLOY_SSH_REMOTE_CMD
_debug2 DEPLOY_SSH_REMOTE_CMD "$DEPLOY_SSH_REMOTE_CMD"
if [ -n "$DEPLOY_SSH_REMOTE_CMD" ]; then
_savedeployconf DEPLOY_SSH_REMOTE_CMD "$DEPLOY_SSH_REMOTE_CMD"
fi
# USE_SCP is optional. If not provided then default to previously saved
# value (which may be undefined... equivalent to "no").
_getdeployconf DEPLOY_SSH_USE_SCP
_debug2 DEPLOY_SSH_USE_SCP "$DEPLOY_SSH_USE_SCP"
if [ -z "$DEPLOY_SSH_USE_SCP" ]; then
DEPLOY_SSH_USE_SCP="no"
fi
_savedeployconf DEPLOY_SSH_USE_SCP "$DEPLOY_SSH_USE_SCP"
# SCP_CMD is optional. If not provided then use scp
_getdeployconf DEPLOY_SSH_SCP_CMD
_debug2 DEPLOY_SSH_SCP_CMD "$DEPLOY_SSH_SCP_CMD"
if [ -z "$DEPLOY_SSH_SCP_CMD" ]; then
DEPLOY_SSH_SCP_CMD="scp -q"
fi
_savedeployconf DEPLOY_SSH_SCP_CMD "$DEPLOY_SSH_SCP_CMD"
if [ "$DEPLOY_SSH_USE_SCP" = "yes" ]; then
DEPLOY_SSH_MULTI_CALL="yes"
_info "Using scp as alternate method for copying files. Multicall Mode is implicit"
elif [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
_info "Using MULTI_CALL mode... Required commands sent in multiple calls to remote host"
else
_info "Required commands batched and sent in single call to remote host"
fi
_deploy_ssh_servers="$DEPLOY_SSH_SERVER"
for DEPLOY_SSH_SERVER in $_deploy_ssh_servers; do
_ssh_deploy
done
}
_ssh_deploy() {
_err_code=0
_cmdstr=""
_backupprefix=""
_backupdir=""
_local_cert_file=""
_local_ca_file=""
_local_full_file=""
case $DEPLOY_SSH_SERVER in
*:*)
_host=${DEPLOY_SSH_SERVER%:*}
_port=${DEPLOY_SSH_SERVER##*:}
;;
*)
_host=$DEPLOY_SSH_SERVER
_port=
;;
esac
_info "Deploy certificates to remote server $DEPLOY_SSH_USER@$_host:$_port"
if [ "$DEPLOY_SSH_BACKUP" = "yes" ]; then
_backupprefix="$DEPLOY_SSH_BACKUP_PATH/$_cdomain-backup"
_backupdir="$_backupprefix-$(_utc_date | tr ' ' '-')"
# run cleanup on the backup directory, erase all older
# than 180 days (15552000 seconds).
_cmdstr="{ now=\"\$(date -u +%s)\"; for fn in $_backupprefix*; \
do if [ -d \"\$fn\" ] && [ \"\$(expr \$now - \$(date -ur \$fn +%s) )\" -ge \"15552000\" ]; \
then rm -rf \"\$fn\"; echo \"Backup \$fn deleted as older than 180 days\"; fi; done; }; $_cmdstr"
# Alternate version of above... _cmdstr="find $_backupprefix* -type d -mtime +180 2>/dev/null | xargs rm -rf; $_cmdstr"
# Create our backup directory for overwritten cert files.
_cmdstr="mkdir -p $_backupdir; $_cmdstr"
_info "Backup of old certificate files will be placed in remote directory $_backupdir"
_info "Backup directories erased after 180 days."
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
if [ -n "$DEPLOY_SSH_KEYFILE" ]; then
if [ "$DEPLOY_SSH_BACKUP" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $DEPLOY_SSH_KEYFILE $_backupdir >/dev/null;"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
# copy new key into file.
if [ "$DEPLOY_SSH_USE_SCP" = "yes" ]; then
# scp the file
if ! _scp_remote_cmd "$_ckey" "$DEPLOY_SSH_KEYFILE"; then
return $_err_code
fi
else
# ssh echo to the file
_cmdstr="$_cmdstr echo \"$(cat "$_ckey")\" > $DEPLOY_SSH_KEYFILE;"
_info "will copy private key to remote file $DEPLOY_SSH_KEYFILE"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
fi
if [ -n "$DEPLOY_SSH_CERTFILE" ]; then
_pipe=">"
if [ "$DEPLOY_SSH_CERTFILE" = "$DEPLOY_SSH_KEYFILE" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$DEPLOY_SSH_BACKUP" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $DEPLOY_SSH_CERTFILE $_backupdir >/dev/null;"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
# copy new certificate into file.
if [ "$DEPLOY_SSH_USE_SCP" = "yes" ]; then
# scp the file
_local_cert_file=$(_mktemp)
if [ "$DEPLOY_SSH_CERTFILE" = "$DEPLOY_SSH_KEYFILE" ]; then
cat "$_ckey" >>"$_local_cert_file"
fi
cat "$_ccert" >>"$_local_cert_file"
if ! _scp_remote_cmd "$_local_cert_file" "$DEPLOY_SSH_CERTFILE"; then
return $_err_code
fi
else
# ssh echo to the file
_cmdstr="$_cmdstr echo \"$(cat "$_ccert")\" $_pipe $DEPLOY_SSH_CERTFILE;"
_info "will copy certificate to remote file $DEPLOY_SSH_CERTFILE"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
fi
if [ -n "$DEPLOY_SSH_CAFILE" ]; then
_pipe=">"
if [ "$DEPLOY_SSH_CAFILE" = "$DEPLOY_SSH_KEYFILE" ] ||
[ "$DEPLOY_SSH_CAFILE" = "$DEPLOY_SSH_CERTFILE" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$DEPLOY_SSH_BACKUP" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $DEPLOY_SSH_CAFILE $_backupdir >/dev/null;"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
# copy new certificate into file.
if [ "$DEPLOY_SSH_USE_SCP" = "yes" ]; then
# scp the file
_local_ca_file=$(_mktemp)
if [ "$DEPLOY_SSH_CAFILE" = "$DEPLOY_SSH_KEYFILE" ]; then
cat "$_ckey" >>"$_local_ca_file"
fi
if [ "$DEPLOY_SSH_CAFILE" = "$DEPLOY_SSH_CERTFILE" ]; then
cat "$_ccert" >>"$_local_ca_file"
fi
cat "$_cca" >>"$_local_ca_file"
if ! _scp_remote_cmd "$_local_ca_file" "$DEPLOY_SSH_CAFILE"; then
return $_err_code
fi
else
# ssh echo to the file
_cmdstr="$_cmdstr echo \"$(cat "$_cca")\" $_pipe $DEPLOY_SSH_CAFILE;"
_info "will copy CA file to remote file $DEPLOY_SSH_CAFILE"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
fi
if [ -n "$DEPLOY_SSH_FULLCHAIN" ]; then
_pipe=">"
if [ "$DEPLOY_SSH_FULLCHAIN" = "$DEPLOY_SSH_KEYFILE" ] ||
[ "$DEPLOY_SSH_FULLCHAIN" = "$DEPLOY_SSH_CERTFILE" ] ||
[ "$DEPLOY_SSH_FULLCHAIN" = "$DEPLOY_SSH_CAFILE" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$DEPLOY_SSH_BACKUP" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $DEPLOY_SSH_FULLCHAIN $_backupdir >/dev/null;"
if [ "$DEPLOY_SSH_FULLCHAIN" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
# copy new certificate into file.
if [ "$DEPLOY_SSH_USE_SCP" = "yes" ]; then
# scp the file
_local_full_file=$(_mktemp)
if [ "$DEPLOY_SSH_FULLCHAIN" = "$DEPLOY_SSH_KEYFILE" ]; then
cat "$_ckey" >>"$_local_full_file"
fi
if [ "$DEPLOY_SSH_FULLCHAIN" = "$DEPLOY_SSH_CERTFILE" ]; then
cat "$_ccert" >>"$_local_full_file"
fi
if [ "$DEPLOY_SSH_FULLCHAIN" = "$DEPLOY_SSH_CAFILE" ]; then
cat "$_cca" >>"$_local_full_file"
fi
cat "$_cfullchain" >>"$_local_full_file"
if ! _scp_remote_cmd "$_local_full_file" "$DEPLOY_SSH_FULLCHAIN"; then
return $_err_code
fi
else
# ssh echo to the file
_cmdstr="$_cmdstr echo \"$(cat "$_cfullchain")\" $_pipe $DEPLOY_SSH_FULLCHAIN;"
_info "will copy fullchain to remote file $DEPLOY_SSH_FULLCHAIN"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
fi
# cleanup local files if any
if [ -f "$_local_cert_file" ]; then
rm -f "$_local_cert_file"
fi
if [ -f "$_local_ca_file" ]; then
rm -f "$_local_ca_file"
fi
if [ -f "$_local_full_file" ]; then
rm -f "$_local_full_file"
fi
if [ -n "$DEPLOY_SSH_REMOTE_CMD" ]; then
_cmdstr="$_cmdstr $DEPLOY_SSH_REMOTE_CMD;"
_info "Will execute remote command $DEPLOY_SSH_REMOTE_CMD"
if [ "$DEPLOY_SSH_MULTI_CALL" = "yes" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
_cmdstr=""
fi
fi
# if commands not all sent in multiple calls then all commands sent in a single SSH call now...
if [ -n "$_cmdstr" ]; then
if ! _ssh_remote_cmd "$_cmdstr"; then
return $_err_code
fi
fi
# cleanup in case all is ok
return 0
}
#cmd
_ssh_remote_cmd() {
_cmd="$1"
_ssh_cmd="$DEPLOY_SSH_CMD"
if [ -n "$_port" ]; then
_ssh_cmd="$_ssh_cmd -p $_port"
fi
_secure_debug "Remote commands to execute: $_cmd"
_info "Submitting sequence of commands to remote server by $_ssh_cmd"
# quotations in bash cmd below intended. Squash travis spellcheck error
# shellcheck disable=SC2029
$_ssh_cmd "$DEPLOY_SSH_USER@$_host" sh -c "'$_cmd'"
_err_code="$?"
if [ "$_err_code" != "0" ]; then
_err "Error code $_err_code returned from ssh"
fi
return $_err_code
}
# cmd scp
_scp_remote_cmd() {
_src=$1
_dest=$2
_scp_cmd="$DEPLOY_SSH_SCP_CMD"
if [ -n "$_port" ]; then
_scp_cmd="$_scp_cmd -P $_port"
fi
_secure_debug "Remote copy source $_src to destination $_dest"
_info "Submitting secure copy by $_scp_cmd"
$_scp_cmd "$_src" "$DEPLOY_SSH_USER"@"$_host":"$_dest"
_err_code="$?"
if [ "$_err_code" != "0" ]; then
_err "Error code $_err_code returned from scp"
fi
return $_err_code
}
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